Show simple item record

dc.contributor.authorShi, Zheng
dc.contributor.authorMa, Shaodan
dc.contributor.authorYang, Guanghua
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2018-04-16T11:27:42Z
dc.date.available2018-04-16T11:27:42Z
dc.date.issued2018-03-19
dc.identifier.citationShi Z, Ma S, Yang G, Alouini M-S (2018) Energy-Efficient Optimization for HARQ Schemes over Time-Correlated Fading Channels. IEEE Transactions on Vehicular Technology: 1–1. Available: http://dx.doi.org/10.1109/TVT.2018.2813981.
dc.identifier.issn0018-9545
dc.identifier.issn1939-9359
dc.identifier.doi10.1109/TVT.2018.2813981
dc.identifier.urihttp://hdl.handle.net/10754/627501
dc.description.abstractEnergy efficiency of three common hybrid automatic repeat request (HARQ) schemes including Type I HARQ, HARQ with chase combining (HARQ-CC) and HARQ with incremental redundancy (HARQ-IR), is analyzed and joint power allocation and rate selection to maximize the energy efficiency is investigated in this paper. Unlike prior literature, time-correlated fading channels is considered and two widely concerned quality of service (QoS) constraints, i.e., outage and goodput constraints, are also considered in the optimization, which further differentiates this work from prior ones. Using a unified expression of asymptotic outage probabilities, optimal transmission powers and optimal rate are derived in closed-forms to maximize the energy efficiency while satisfying the QoS constraints. These closed-form solutions then enable a thorough analysis of the maximal energy efficiencies of various HARQ schemes. It is revealed that with low outage constraint, the maximal energy efficiency achieved by Type I HARQ is <formula><tex>$\frac{1}{4\ln2}$</tex></formula> bits/J, while HARQ-CC and HARQ-IR can achieve the same maximal energy efficiency as <formula><tex>$\frac{\kappa_\infty}{4\ln2}$</tex></formula> bits/J where <formula><tex>$\kappa_\infty = 1.6617$</tex></formula>. Moreover, time correlation in the fading channels has a negative impact on the energy efficiency, while large maximal allowable number of transmissions is favorable for the improvement of energy efficiency. The effectiveness of the energy-efficient optimization is verified by extensive simulations and the results also show that HARQ-CC can achieve the best tradeoff between energy efficiency and spectral efficiency among the three HARQ schemes.
dc.description.sponsorshipNational Natural Science Foundation of China[61601524]
dc.description.sponsorshipResearch Committee of University of Macau[MYRG2014- 00146-FST, MYRG2016-00146-FST]
dc.description.sponsorshipMacau Science and Technology Development Fund[020/2015/AMJ, 091/2015/A3]
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttp://ieeexplore.ieee.org/document/8319455/
dc.rights(c) 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectDecoding
dc.subjectEnergy efficiency
dc.subjectFading channels
dc.subjecthybrid automatic repeat request
dc.subjectOptimization
dc.subjectpower allocation and rate selection
dc.subjectPower system reliability
dc.subjectProbability
dc.subjectQuality of service
dc.subjecttime-correlated fading channels
dc.subjectWireless communication
dc.titleEnergy-Efficient Optimization for HARQ Schemes over Time-Correlated Fading Channels
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentEE, KAUST, Thuwal, N/A Saudi Arabia 69000
dc.identifier.journalIEEE Transactions on Vehicular Technology
dc.eprint.versionPost-print
dc.contributor.institutionElectrical and Computer Engineering, University of Macau, Macao, Macao Macao
dc.contributor.institutionElectrical and Computer Engineering, University of Macau, Macao, Macao Macao 853
dc.contributor.institutionInstitute of Physical Internet, Jinan University Zhuhai College, 162687 Zhuhai, Guangdong China
kaust.personAlouini, Mohamed-Slim
refterms.dateFOA2018-06-14T04:19:22Z


Files in this item

Thumbnail
Name:
08319455.pdf
Size:
502.2Kb
Format:
PDF
Description:
Accepted Manuscript

This item appears in the following Collection(s)

Show simple item record